Dallin, David J.
Yale University Press, 1949
Buku Teks
edited by Donald S. Zagoria
Yale University Press, 1982
Buku Teks
Weigh, Ken Shen
The Coomercial Press , 1928
Buku Teks
Griffith, William E.
MIT Press, 1965
Buku Teks
Utley, Freda
The Bobbs-Merrill Company, 1947
Buku Teks